Class: Hotfile::Integer
- Inherits:
-
Object
- Object
- Hotfile::Integer
- Defined in:
- lib/hotfile/integer.rb
Overview
Parses a string integer (possibly overpunched) into a real Integer
Instance Method Summary collapse
-
#initialize(int_string) ⇒ Integer
constructor
A new instance of Integer.
- #negative? ⇒ Boolean
- #to_i ⇒ Object
Constructor Details
#initialize(int_string) ⇒ Integer
Returns a new instance of Integer.
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# File 'lib/hotfile/integer.rb', line 6 def initialize(int_string) @raw_value = +int_string end |
Instance Method Details
#negative? ⇒ Boolean
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# File 'lib/hotfile/integer.rb', line 24 def negative? '}JKLMNOPQR'.include? @raw_value[-1] end |
#to_i ⇒ Object
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# File 'lib/hotfile/integer.rb', line 10 def to_i temp_string = @raw_value.clone overpunch_char = temp_string[-1] last_digit = case overpunch_char when '{', '}' then 0 when /[0-9]/ then overpunch_char.to_i when /[A-I]/ then overpunch_char.unpack1('c') - 64 when /[J-R]/ then overpunch_char.unpack1('c') - 73 end temp_string[-1] = last_digit.to_s temp_string = "-#{temp_string}" if negative? temp_string.to_i end |